{"id":114657,"date":"2024-03-30T00:25:55","date_gmt":"2024-03-29T22:25:55","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-kode-xz-versij-5-6-0-i-5-6-1-obnaruzhen-bekdor"},"modified":"2024-03-30T00:25:55","modified_gmt":"2024-03-29T22:25:55","slug":"v-kode-xz-versij-5-6-0-i-5-6-1-obnaruzhen-bekdor","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/v-kode-xz-versij-5-6-0-i-5-6-1-obnaruzhen-bekdor","title":{"rendered":"I koden til xz versionerne 5.6.0 og 5.6.1 er der fundet en backdoor","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Debian-udvikler og informationssikkerhedsresearcher Andres Freund rapporterer om opdagelsen af en formodet bagd\u00f8r i kildekoden til xz versionerne 5.6.0 og 5.6.1.<\/p>\n

<\/p>\n

Bagd\u00f8ren repr\u00e6senterer en linje i et af m4-scriptterne<\/a>, som tilf\u00f8jer obfuskeret ondsindet kode til slutningen af configure-scriptet. Denne kode \u00e6ndrer derefter en af de genererede Makefile-filer i projektet, hvilket i sidste ende f\u00f8rer til, at ondsindet kode (maskeret som en testarchiv bad-3-corrupt_lzma2.xz) bliver inkluderet i bin\u00e6rfilen liblzma.<\/p>\n

<\/noindex><\/noindex> <\/p>\n

S\u00e6regent ved h\u00e6ndelsen er, at den ondsindede kode er indeholdt kun<\/em> i de distribuerede tar-arkiver med kildekoden og ikke er til stede i projektets git-repository.<\/p>\n

Det rapporteres, at den person, hvis navn blev brugt til at tilf\u00f8je den ondsindede kode til projektets repository, enten er direkte involveret i h\u00e6ndelsen eller er blevet offer for en alvorlig kompromittering af sine personlige konti (men forskeren h\u00e6lder mod den f\u00f8rste mulighed, da denne person personligt har deltaget i flere diskussioner relateret til de ondsindede \u00e6ndringer).<\/p>\n

Forskerne bem\u00e6rker i deres rapport, at m\u00e5let med bagd\u00f8ren tilsyneladende er at injicere kode i sshd-processen og \u00e6ndre RSA-n\u00f8glekontrolkoden, og de fremf\u00f8rer flere metoder til indirekte at kontrollere, om den ondsindede kode k\u00f8rer p\u00e5 dit system i \u00f8jeblikket.<\/p>\n

<\/p>\n

If\u00f8lge en nyhedsartikel fra openSUSE-projektet<\/a>, p\u00e5 grund af kompleksiteten af bagd\u00f8rens kode og den formodede mekanisme for dens udnyttelse, er det sv\u00e6rt at fastsl\u00e5, om den overhovedet har «aktiveret» sig p\u00e5 denne maskine, og det anbefales at foretage en fuldst\u00e6ndig geninstallation af OS med rotation af alle relevante n\u00f8gler p\u00e5 alle maskiner, der har haft inficerede versioner af xz.<\/p>\n

<\/noindex><\/p>\n

Kilde: linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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